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// revisions: no_drop_tracking drop_tracking drop_tracking_mir
// [drop_tracking] compile-flags: -Zdrop-tracking
// [drop_tracking_mir] compile-flags: -Zdrop-tracking-mir
#![feature(generators)]
#![feature(negative_impls)]
struct NotSend;
struct NotSync;
impl !Send for NotSend {}
impl !Sync for NotSync {}
fn main() {
fn assert_sync<T: Sync>(_: T) {}
fn assert_send<T: Send>(_: T) {}
assert_sync(|| {
//~^ ERROR: generator cannot be shared between threads safely
let a = NotSync;
yield;
drop(a);
});
assert_send(|| {
//~^ ERROR: generator cannot be sent between threads safely
let a = NotSend;
yield;
drop(a);
});
}
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